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#1 maverick x

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Posted 12 December 2006 - 07:02 PM

For my science fair project I am modding a nerf gun and I need to know the science behind how a 17/32 K&S brass barrel helps it shoot farther and more accurate.
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#2 Uncle Hammer

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Posted 12 December 2006 - 07:25 PM

Friction and many other factors. But mostly friction.
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#3 PiMpDaDdY

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Posted 12 December 2006 - 08:52 PM

Friction and many other factors. But mostly friction.



That is correct! Also all the air in the barrel is pushing the dart and not just some of the air. In stock blasters the darts fit the barrels loosely, well when you add 17/32" brass to the barrels the darts fit tight and air tight at that. So there is no air being lost with 17/32" versus stock barrels.
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I only ask because I'm thinking of trying these and it would suck if the balls got all covered with hairs after a while.

#4 monkey with a nf

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Posted 13 December 2006 - 08:46 PM

Also, longer barrells shoot farther because the air accelerates its way down the barrell, at least until it equals the outside pressure, at which point it starts slowing down. This means that a longer barrell greatly improves ranges.
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QUOTE(Pineapple @ Sep 12 2007, 03:13 PM) View Post

For maximum efficiency?


1. Pump up. Count how many pumps.

2. Keep going until you hear a loud "bang".

3. Subtract one pump from the total. Rebuild your air bladder.


There you go.

#5 Pineapple

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Posted 14 December 2006 - 12:05 PM

For my science fair project I am modding a nerf gun and I need to know the science behind how a 17/32 K&S brass barrel helps it shoot farther and more accurate.


What's your hypothesis? What's the challenge to prove with research and experiment?

If you're not versed in theories of physics and dynamics of moving air and projectiles, especially when you need to ask a discussion forum board for basic answers, perhaps that isn't the best science fair project to tackle based on lack of experience.

I did a science fair project on aerodynamics of shapes, which I researched by constructing a fluid dynamic tank to measure water "wake" (simulated shockwave) generated by various acrylic shapes. It was ghetto in terms of standards of measurement (drawings and crude pictures), but it got me 5th place in the local fair, and the opportunity to enter the State fair, in which I was properly blown away by all the eggheads with tons more research and incredible data (we were all in middle school at the time).

If you insist on pursuing the venture, I'd direct you to PM (or at least visit his website) Boltsniper. Mr. Neblett has much of the theory behind his designs, and he's an aeronautical engineer, so I cannot think of a better source to put in your Bibliography of contributors to research. Ask nicely and don't expect him to do any work for you....maybe just printed theory.

Either that, or grow some beans in a petri dish. Much easier and a bit less research to do. You'd have to come up with your own hypothesis.


Good luck,

-Piney-
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<!--quoteo(post=209846:date=Feb 5 2009, 06:27 PM:name=boom)--><div class='quotetop'>QUOTE(boom @ Feb 5 2009, 06:27 PM) View Post</div><div class='quotemain'><!--quotec-->
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#6 King Of Butt Land

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Posted 14 December 2006 - 05:03 PM

Nerfhaven really has gone down the shitter.
QUOTE(Puppy-žlayer @ Dec 18 2008, 04:22 AM) View Post

This contest may have some flaws, as people can simply be a deuschbag over the internet. By Lying.

A war-like setting/invitational would be better...


#7 Substance Abuse

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Posted 14 December 2006 - 06:07 PM

Nerfhaven really has gone down the shitter.


What the hell... If you don't like it leave.

Anyway on topic: This is not a good idea. There are plenty other ways to get an A than by doing something like this. As piney mentioned you most likely will not think of a scientific hypothesis that is correct.

If you insist on going through with your project start your hypothesis with. " If friction is the reason for farther projection of nerf guns then..."

Good Luck and I salute you for spreading nerf in your own ways.
QUOTE(Brass @ Jul 6 2007, 10:30 PM) View Post

QUOTE(keef @ Jul 6 2007, 09:29 PM) View Post

Yeah, I'm in the same case as Substance Abuse...
Brass, ask your mother.

She said your dad owes her three dollars.

#8 nerfer34

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Posted 14 December 2006 - 06:41 PM

Nerfhaven really has gone down the shitter.


O ya and you've been a great contributor to make it better......
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#9 Substance Abuse

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Posted 14 December 2006 - 06:47 PM

King I have been laughing for the last 2 hours. If you got banned from here you would cry like a little bitch because all of your posts are pointless and degrade my IQ by 20 points each time I read them. Honestly If I were you I wouldn't talk shit about a site that you would cry and sob about if you got banned.

If you think this site is so bad go join Ninjz and lead Nerf X to victory...
QUOTE(Brass @ Jul 6 2007, 10:30 PM) View Post

QUOTE(keef @ Jul 6 2007, 09:29 PM) View Post

Yeah, I'm in the same case as Substance Abuse...
Brass, ask your mother.

She said your dad owes her three dollars.


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